Patents by Inventor Yuko OGURA

Yuko OGURA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Quantum dot and method of producing the same; and wavelength converting member, lighting member, back light unit, and display device using quantum dot
    Patent number: 11124703
    Abstract: Provided is a Cd-free blue fluorescent quantum dot with a narrow fluorescence FWHM. The quantum dot does not contain cadmium and its fluorescence FWHIM is 25 nm or less. The quantum dot is preferably a na.nocrystal containing zinc and selenium or zinc and selenium and sulfur. Further, the quantum dot preferably has a core-shell structure in which the nanocrystal serves as a core and the surface of the core is coated with a shell.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: September 21, 2021
    Assignee: NS MATERIALS INC.
    Inventors: Yuko Ogura, Yuka Takamizuma, Kazunori Iida, Emi Tsutsumi, Masanori Tanaka, Soichiro Nikata
  • QUANTUM DOT AND METHOD OF PRODUCING THE SAME; AND WAVELENGTH CONVERTING MEMBER, LIGHTING MEMBER, BACK LIGHT UNIT, AND DISPLAY DEVICE USING QUANTUM DOT
    Publication number: 20200347296
    Abstract: Provided is a Cd-free blue fluorescent quantum dot with a narrow fluorescence FWHM. The quantum dot does not contain cadmium and its fluorescence FWHIM is 25 nm or less. The quantum dot is preferably a na.nocrystal containing zinc and selenium or zinc and selenium and sulfur. Further, the quantum dot preferably has a core-shell structure in which the nanocrystal serves as a core and the surface of the core is coated with a shell.
    Type: Application
    Filed: October 12, 2018
    Publication date: November 5, 2020
    Applicant: NS MATERIALS INC.
    Inventors: Yuko OGURA, Yuka TAKAMIZUMA, Kazunori IIDA, Emi TSUTSUMI, Masanori TANAKA, Soichiro NIKATA
  • QUANTUM DOT AND WAVELENGTH CONVERTING MEMBER, LIGHTING MEMBER, BACK LIGHT UNIT, AND DISPLAY DEVICE USING QUANTUM DOT, AND METHOD OF PRODUCING QUANTUM DOT
    Publication number: 20200212256
    Abstract: The present invention seeks to provide cadmium-free quantum dots with a narrow fluorescence FWHM. The quantum dot does not contain cadmium and its fluorescence FWHM is 30 nm or less. The quantum dot is preferably a nanocrystal containing zinc and tellurium or zinc and tellurium and sulfur or zinc and tellurium and selenium and sulfur. Further, the quantum dot preferably has a core-shell structure in which the nanocrystal serves as a core and the surface of the core is coated with a shell.
    Type: Application
    Filed: July 27, 2018
    Publication date: July 2, 2020
    Applicant: NS MATERIALS INC.
    Inventors: Kazunori IIDA, Emi TSUTSUMI, Yuko OGURA, Masanori TANAKA, Soichiro NIKATA, Yuka TAKAMIZUMA